Pump.



PUMP.

APPLIUATIOH FILED APB.2, 1910.

Patented Aug.'23, l1910.

3 SHEETS-SHEET l.

W. H. CLARK.

PUMP.

APPLIOATION rILED APR. 2. 1910.

Patented Aug. 23, 1910.

3 SHEETS-SHEET 2.

W. H. CLARK.

PUMP.

APPLICATION FILED APR. 2, 1910.

968, 1 26 Patented Aug. 23, 1910.

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WILLIAM HENRY CLARK, OF HOBOKEN, NEW JERSEY.

PUMP.

Specification of Letters Patent.

Patented Aug. 23, 1910.

Application filed April 2, 1910. Serial No. 553,105.

To all 'whom it 'may concern:

Be it known that I, WILLIAM HENRY CLARK, a citizen of the United States, residing at Hoboken, co-unty of Hudson, and 'State of New Jersey, have invented certain new and useful Improvements in Pumps, of which the following is a specification.

This invention relates to pumps in which movement of pistons causes displacement of liquid, the movement of said pistons also serving to open and close passages which control the flow of liquid.

The object of the invention is to provide within a single casing means by which liquid will be delivered at the discharge end of the pump at a comparatively uniform pressure.

A further object is to reduce the number of moving parts required to accomplish the desired result.

The invention consists in applying direct action of a rotating eccentric upon a piston journaled upon it, said piston serving to transmit motion to another piston, both of said pistons, and said eccentric being containe within a single pump casing. The interior of the casing is provided with guides in which one of said pistons has reciprocating movement, the interior of said piston having guides placed at right angles to the first mentioned guides, in,which latter guides the other piston has reciprocating movement. The casing and the pistons are provided with ports and passages arranged so that-the pistons, during their play with relation to each otherV and to the casing, act as valves which control the flow of liquid in such manner that the play of the pistons causes a liquid to be forced from the supply end to the discharge end of the pump.

In the accompanying drawings, Figure 1 is a central vertical section of my improved pump. Fig. 2 is a section on the line II-II of Fig. 1 Fig. 3 is a view similar to Fig. 1 showin the parts in a different position. Fig. 4 1s a section on the line IV-IV of Fig. 3. Fig. 5 is a section on the line V-V of Fig. 4. Fig. 6 is a section on the line VI-VI of Fig. 5. Fig. 7 is a perspective view of the inner piston.

The pump is so constructed that the actuating shaft 1 can be rotated in either direction, thereby electing the direction of How. The actuatin shaft 1 isl journaled in side plates 2, Whig-lh, bolted to the central part 3 constitute the casing.

Forming part of the shaft 1- is an eccentric or crank 4c, upon which is journaled a piston 5. Piston 5 and another piston 6 are held between the side plates 2. Piston 6 is placed between guides 7 formed on the interior of the central part 3, and piston 5 is placed between guides 8 formed on thel interior of piston 6. As shown in Figs. 1 and 3, it will be seen that the guides 7 and 8 stand at right angles to each other. Consequently when the eccentric or crank 4 is rotated in the direction indicated by the arrow, and the piston 5 is carried around in a circular path, it will move in guides 8 and have a reciprocating movement relative to the piston 6. As the guides 8 prevent movement of the piston 5 at a right angle to its line of reciprocation, the iston 6 will be moved in guides 7 as the piston 5 is carried around in said circular path, and the piston 6 will have a reciprocating movement at a right angle to the line of reciprocation of piston 5.

Piston 6 is provided with a chamber 9, at each end of piston 5, in which the piston 5 has movement. Piston 6 is provided with passages 10 adapted for placing the chambers 9 in communication with supply ports 11 and discharge ports 12 formed in the central part 3.

The casing is provided with a chamber 13 at each end of piston 6 in which said piston has movement. Piston 6 has passages 14. adapted for placing the chambers 13 in communication with supply ports l5 and discharge ports 16 formed in the piston 5. Supply ports 15 are at all times in coinmunication with a passage 17 formed in one of the side plates 2, said passage being in communication with the duct 18 communicating with supply p ipe 19. The dis-1` charge ports 16 are at all times in communication with a passage 20 formed in the other side plate 2, said passage being in communication with the duct 21 communicating with the discharge pipe 22.

The operation is as follows: Referring to Figs. l and 2, it will be seen that piston 6 has moved downward, and that piston 5 is moving toward the left. The downward movement of piston 6 has caused the passages 10 to open the lower supply port 11 and discharge port 12, so that during travel of piston 5 toward the left, liquid will be drawn through the supply port 1l and forced through the discharge port 12. Then as piston 6 is moved upward, and piston 5 is moved to the position shown in Fig. 3, the chamber 9'to the right of piston 5 will be filled with liquid, while liquid will have been forced from the chamber 9 to the left of piston 5. The supply and discharge ports 11, 12 are closed in this position, and as the pistons 5 and 6 are moved upward by rotation of eccentric 4, the upper supply and discharge ports 1l, l2 will be opened by passages 10, and as piston 5 travels toward the right, liquid contained in chamber 9 to the right will be forced through the upper discharge port 12 and liquid will be drawn through the upper supply port 11 in to the chamber 9 to the left. Then as eccentric 4 is further rotated, the pistons 5 and 6 will be moved downward, causing the upper supply and discharge ports 11, 12 to be closed, and the lower supply and discharge ports 11, 12 to be opened by passages 10, and as piston 5 travels toward the left, liquid contained in chamber 9 to the left will be forced through the lower discharge port 12, and liquid will be drawn through the lower supply port 11 into the chamber 9 to the right, the operation previously described being then repeated.

Referring again to Figs. 1 and 2 it will be seen that the upper chamber 13 has been i supplied with liquid from upper supply port 15, and that liquid has been forced through the lower discharge port 16, said ports having been open during travel of piston 5 previous to closure, as shown in Fig. 1. As piston 5 is moved from the position shown in Fig. 1 to the position shown in Fig. 3, the upper discharge port 16 will be open to upper passage 14 and chamber 13, and the lower supprly port 15 will be open to the lower passage 14 and chamber 13, so that while the piston 6 is moving upward liquid will be forced from the upper chamber 18 through the upper discharge port 16, and liquid will be drawn thro-ugh the lower i supply port 15, and passage 14 into the lower chamber 13. Then as the pistons 5 and 6 are moved to the end of their upward movement, and the piston 5 has moved toward the right until it arrives in a central position, all the supply and discharge ports 15, 16 will-be closed, and as piston 5 travels farther toward the ri ht, the upper supply port 15 and the lower ischarge port 16 will be opened, so that during downward travel of piston 6, liquid will be fed to the upper chamber 18 "through the upper supply port 15 and passage 14, and liquid will. be forced from the lower chamber 13 through the lower discharge port 16 and passage 14. When the pistons 5. and 6 reach the position shown in Fig. 1 the operation previously described, by which the supply and discharge ports 15 and 16 are placed in communication with passages 14, will be repeated. By having said pistonsreciproi eating piston in said casing, a second liquid, it will be evident that as the pistons act as slide valves controlling the ports in a uniform positive manner, this pump could be used for pumping air or gases.

Havmg described my invention, what I claim is:

1. A pump having a piston and pump chambers in which said piston has 'reciproeating movement, a second piston having reciprocating movement within the first named piston, the movement of said second piston being at a right angle to the line 0f reciproeation of the first named piston, the first named piston having chambers in which said second piston has movement, and means whereby reciprocations of said pistons open supply and discharge ports to said chambers in which the pistons have movement.

2. A pump having a piston, and pump chambers in which said piston has reciprocating movement, a second piston having reciprocating movement within the first named piston, the movement of said second piston being at a right angle to the line of reciprocation of the rst named piston, the v first named piston having chambers in which said second piston has movement, means whereby reciprocations of said pistons open supply and discharge ports to said chambers in which the pistons have movement, and means for causing said reciprocations of said pistons.

3. Apump comprising a casing,a reciproiston having reciprocating movement within the first named piston, the movement of said second piston being at a right angle to the line of reciprocation of the first named piston, said easing having chambers in which the first named piston has movement, and the first named piston having chambers in which the second piston has movement, and means whereby reciprocations of said pistons open supply and discharge ports to said chambers in which the pistons have movement.

4. Apump comprising a casing,a reciproeating piston in said casing, a second piston having reciprocating movement within the first named piston, the movement of said second piston being at a right angle to the line of reciprocation of the first named piston, supply and discharge ports controlled by said pistons, and means for causing said reciprocations of said pistons.

5. A pump casing having a piston, said casing having guides in which said piston has reciprocating movement, a second piston, the first named piston having guides in which said second piston has reciprocating movement at a right angle to the line of reciprocation of the first named piston, supply and discharge ports controlled by said pistons, and means for causing said reciprocations of said pistons.

6. A pump comprising a casing,arecipro eating piston in said casing, a second piston having reciprocating movement within the first named piston at a right angle to the line of reciprocation thereof, the first named piston having chambers in which said second piston has movement, said casing having supply and discharge ports controlled by reciprocation of the first named piston, and adapted to co-act therewith to permit said chambers to be alternately filled and emptied by reciprocations of said second pist-on.

7. A pump comprising a casing, a reciprocating piston in said casing, a second piston having reciprocating movement within the first named piston at a right angle to the line of reciprocation thereof, the outer pistonhaving chambers in which the inner piston has movement, said casing having supply and discharge ports, said outer piston having passagescommunicating with said chambers, and adapted to control said supply and discharge ports by the reciprocations of said outer piston; whereby reciprocations of the inner piston within the outer piston forces liquid through the supply and discharge ports controlled by the outer piston.

8. A pump comprising a casing, a reciprocating piston in said casing, a second piston having reciprocating movement within the first named piston at a right angle to the line of reciprocation thereof, the outer piston having chambers in which the inner piston has movement, said casing having supply and discharge ports on opposite sides transversely of the line of reciprocation of said outer piston, said outer piston having passages communicating with said chambers, and adapted to co-act with said ports; whereby reciprocations of the outer piston control said ports, and reciprocations of the inner piston force liquid through said ports, passages and chambers.

9. The combination with pump chambers and a piston having reciprocating movement therein, of a second piston having reciprocating movement within the first named piston, the movement of said second piston being at a right angle to the line of reciprocation of the first named piston, the first named piston having passages communicating with said chambers, the second piston having supply and discharge ports adapted to co-act with said passages, and controlled by reciprocation of said second piston, and means whereby reciprocations of the first named piston force liquid through said supply and discharge ports controlled by the second piston.

10. A pump comprising a casing having chambers, a reciprocating piston in said chambers, a second piston having reciprocating movement within the first named piston at a right angle to the line of reciprocation thereof, the outer piston having passages communicating with said chambers, the inner piston having supply and discharge ports on opposite sides transversely of the line of reciprocation thereof, and adapted to co-act with said passages, whereby reciprocations of the inner piston control said ports, and reciprocations of the outer piston force liquid through said ports, passa-ges and chambers.

ll. A pump comprising a casing, a reciprocating piston in said casing, a second piston having reciprocating movement Within the first named piston at a right angle to the line of reciprocation thereof, the outer piston having chambers in which the inner piston has movement, said casing having supply and discharge ports controlled by reciprocations of said outer piston, and adapted to co-act with said outer piston to permit said chambers to be alternately filled and emptied by reciprocations of said inner piston, said casing having chambers in which the outer piston has movement, said inner piston having supply and discharge ports controlled by reciprocations of said inner piston, and adapted to co-act with said outer piston to permit the last named chambers to be a/lternately filled and emptied by reciprocations of said outer piston.

12. A pump having a piston, and pump chambers in which said piston has reciprocating movement, a second piston having reciprocating movement Within the first named piston at a right angle to the line of reciprocation thereof, said inner piston having supply and discharge ports controlled by reciprocations of said inner piston, and adapted to co-act with said outer piston to permit said chambers to be alternately filled and emptied by reciprocations of said outer piston.

13. A pump casing having a piston, said casing having guides and chambers in which said piston has reciprocating movement, an inner piston, the first named piston and said casing having guides and chambers in which said inner piston has reciprocating movement at a right angle to the line of reciprocation of the first named piston, supply and discharge ports controlled by said pistons means whereby reciprocations of tl piston open supply and dischar 'iiiits' to said chambers 1n whicl:g-tlie'fist named piston has moveyieiwtr'and means whereby reciprocations bf the first named piston open supply and discharge ports to said chambers in which the inner piston has movement.

14. A pump y comprising a piston and pump chambersI in which said piston has reciprocating mtovement, a piston and pump chambers within the first named piston, the inner piston having reciprocating movement in the inner chambers at a right angle to the line of reciprocation of the outer piston, means whereby rcciprocations of thc inner piston open supply and discharge ports to said chambers in which the outer piston has movement, and means whereby reciprocations of the outer piston open supply and discharge ports to said chambers in which the inner piston has movement.

15. A pump having a piston and pump chambers in which said piston has reciproeating movement, a 'second piston having reciprocating movement within the first named piston, the movement of said second piston being at a right angle to the line f vof reciprocation of the first named piston;

and means whereby reciprocations of the second piston open supply and discharge ports to said pump chambers in which the first namedl piston has movement.

16. A pump comprising a reciprocating piston, and a second piston having reciprocating movement within the first named 'piston at a right angle to the line of reciprocation, thereof, the first named'piston having pump chambers in which the second pisiton has movement; and means whereby rel.,ciprocations of the first named` piston open I supply and dischar e ports to said chambers in which the secon piston has movement.

17. A pump comprising a casing, a rotating eccentric'forming part of a shaft journaled in said casing, an inner piston journaled on said eccentric Within said casing,

aiieiiter piston having guides in which the "inner piston has reciprocating movement, said casing having guides in which said outer piston has reciprocating movement at a right angle to the line of reciprocation of said inner piston, said reciprocations of the pistons being caused by rotation of said eccentric and coperation of said guides; said casing having chambers in which the outer piston has movement, and said outer piston having chambers in which the inner piston has movement; supply and discharge ports controlled by said pistons; and means whereby reciprocations of said pistons open supply and discharge ports to said chambers in which said pistons have movement.

18. A pump comprising a casing having chambers, a piston having `reciprocating movement in said chambers, and an inner piston having a circular rectilinear motion relative to the casing, the first named piston having guides which cause said inner piston to have reciprocating movement relative to the first named piston at a right angle to the line of reciprocation of said rst named piston, the first named pistonhaving chambers in which said inner piston has movement, said casing having supply and discharge ports controlled by reciprocations of the rst named piston, and adapted to co-act therewith to permit the last named chambers to be alternately filled and emptied by reciprocations of said inner piston, said inner piston having supply and discharge ports controlled by-Freciprocations of said inner piston, and adapted to co-act with the first named piston to permit said chambers in the casing to be alternately filled and emptied by reciprocation of the first named piston. I

In testimony whereof, I aflix my signature', in the presence of two witnesses.

WILLIAM' HENRY CLARK.

Witnesses:

DoNN TWITGBELL, W. A. TOWNER, Jr. 

